Pump



R. U. GRANT sept. 16, 1930 PUMP Filed May l0. 1928 2 Sheets-Sheet l m W u R o L n A attbi 11 11 R. UL GRANT sept. 16, 1930.

PUIP

yFiled May 1o. Y192s 2 Sheets-Sheet 2 c'nv'eor a grani Patented Sept. 176i, 1930 RoBERT; u. GRANT, oF-BnEcKENRIDGE, TEXAS Application inea 'May-1o, 192s.V s eriai N0."2 76,`jso.

V This invention relates to pumps and more lparticularly toa pump,i ntended for use in de ep wells. 'f

` Aniniportant object of the'invention isto produce a device ofthis characterl which is so constructed that it may be placed within the bores of the relatively small pipes which are employed in deep wells. i

A further object of the invention is to pro- I duce a device of this character which may be operated by air,gas or steam pressurefrom thetop ofthe well and in ywhich the con-A struction is vsuch that the necessary connections may be readily made thereto.

These and other objects I attain by the construction shownin the accompanying draw-v ings, wherein for the purpose of illustrationv is shown a vpreferred embodimentof my linvention andwheren :-V l 20 Figurefl is "'vertical sectional view showing;y pumping apparatus :constructed in ac-V cordancewith my invention is position in the well,VY f VFigure 2 is an elevation ofthe pumpingap- '-125 paratu's with one of the. side walls removed;

` Figure 3 is a similar-view with the other ofthes'ide vs fallsremoved;` f Figure is avertical sectional view through the pumping apparatus;

30 Figure 5 isa ldetail View of thefpiston ein ployed. Y .f .Y

`Figure 6 is a detail sectional View showing the type of valve employed with the float control. Y M y i A" 1'35 Referring now more particularlytothe drawings,vthefnumeral 10 generally desigf nates the housing of a pump having at its upper end a coupling 11 wherebyvit may be connected with a flow line 12. The upper wall '40 18 at the center of this coupling is formed as a concave socket 14 from the center of which a port 15 leads downwardly through the Wall. A pair of ports 16 opens at their upper ends through the side wall of the coupling and ex- 45f tend downwardly through the housing of the pump to the lower end thereof. Immediately above the lower end of the pump housing, the ports are enlarged to provide downwardly facing shoulders 17 against which are dis- :50 posed check valve seats 18, the valves 19 of which prevent fdownflow through the ports. These Vseats are heldagainst the shoulders by; plugs 20 threaded into the lower ends'o'tthe ports and `having their upper ends castellatedV to provide escape slots 21 placing transverse ports 22 jin communicationwith Vthe under: surface of the'check'valve seat 18.VY

The lower end of the pumphousing is pro` I vided with two vertically extending cylinders 23 with which the opposite ends of the ports 22 communicate. Reciprocatable within each cylinder is a piston2ll and the lower-ends of the cylinders areequipped with check valves 25 through which they are incommunication with screened'vinletsf26 extendingbelow the lower end of the pump housingQv Pivoted to each piston is'an eccentric strap 27, the uppern ends of which are engaged with eccentrics 28V upon a shaft29 which' is mounted in ball bearV ings() in the walls of the pump housing.

In the upper end of thelpump housing is a.` motor 31, theinlet 32 of which communicates withthe port 15.5 [ff i.

The shaftof the motor 31 is equipped with a gear 33 .forming one element'of a reducing geartrain M ,the final element of which'comprises `a gear 35 mounted upon the'shaft 29. lfhejv housing 10 is preferably vluidtight to form a chamber for the reception of lubricant in whichthe gears of the train andthe shafts thereof operate.

this headseats in the socket(- 'Thefwe'ight of the Vair line in the tubing: will maintain a sealvbetween the head and the socketfwithout' the provision of other means.

' A device `of this character will operatel indefinitely and is preerablyprovided withanv automatic 'cut-off means terminating opera-1- tion when the dischargefrom the well discontinues.' Such a means is illustrated in Figure 1, wherein a float 40 normally maintained in elevated position by the ilow of fluid through the tubing controls a valve 41 which, in turn, controls supply to the motor. This valve is preferably so constructed that when-in position to cut off a pump of the well with which it is associated, it places the supply lille 42 in communication with the supply line 39a of the pump of a second well which may be similarly equipped by placing a number of pumps in series.

In this manner, completion of the pumping operation of one well of the series starts op1 eration of the next well of the series, thus rendering the device particularly adapted for use in pumping wells of low capacity withoutI the constant attendance of a pumpman.

Since the construction hereinbefore set forth is capable of a certain range of change and modification Without materially departing from the spirit of the invention, I do not limit myself to such specific structure except as hereinafter claimed. Y

I claim 1. In pumping apparatus for deep wells and the like, a tubing, a pump housing having at its upper end a coupling for connecting the tubing thereto, the upper wall of the pump housing having a port formed therethrough at the center of the coupling, a liuid motor within the pump housing and communicating with said port, a conduit having means for sealing to the upper wall of the pump housing about the upper end of said port, pump cylinders at the lower end of the pump housing, pistons reciprocat-able therein, driving connections between the pistons and said motor and discharge ports for the cylinders extending through said pump housing and communicating at their upper ends with the interior of said coupling.

Q. In pumping apparatus for deep wells and the like, a tubing, a pump housing having at its upper end a coupling for connecting the tubing thereto, the upper wall of the pump housing having a port formed therethrough at the center of the coupling, a iuid motor within the pump housing and communicating with said port, the upper end of said port communicating with a concave depression in the upper wall of the pump housing, a conduit having a spherical head for engagement in the depression, pump cylinders at the lower end of the pump housing,

f pistons reciprocatable therein, driving connections between the pistons and said motor and discharge ports for the cylinders extending through said pump housing and communicating at their upper ends with the interior of said coupling.

3. In pumping apparatus for deep wells and the like, a tubing, a pump housing having at its upper end a coupling for connecting the tubing thereto, the upper wall of the pump having'a port formed therethrough at the center of the coupling, a fluid motor within the pump housing and communicating with said port, a conduit having means for sealing to the upper wall of the pump housing about the upper end of said port, pump cylinders at the lower end of the pump, pistons reciprocatable therein, driving connections between the pistons and said motor and discharge ports for the cylinders extending through said pump housing and communicating at their upper ends with the interior of said coupling.

4. In pumping apparatus for deep wells and the like, a tubing, a pump housing having at its upper end a coupling for connecting the tubing thereto, the upper wall of the pump housing having a `ort formed therethrough at the center of t e coupling, a fluid motor within the pump housing and communicating with said port, a conduit having means for sealing the upper wall of the pump housing about the upper end of said port, pump cylinders at thelower end of the pump housing, pistons reciprocatable therein, a shaft driven from the motor and having'eccentrics, eccentric straps connecting the "pistons with said eccentrics and discharge ports for the cylinders communicating with said coupling.

5. In pumping apparatus for deep wells and the like, a tubing, a pump housing having at its upper end a coupling for connecting the tubing thereto, the Vupper wall of the pump housing having a port formed therethrough at the center of the coupling, a liuid motorA within the pump housing and com municating with said port, the upper end of said port communicating with a concave depression in the upper wall of the pump hous- 111s", engagement in the depression, pump cylinders at the lower end of the pump housing, pistons reciprocatable therein', driving connections between the pistons and said motor including a shaft driven from the motor and having eccentrics, eccentric straps connecting the pistons with said eccentrics and discharge ports for the cylinders communicating with said coupling.

In testimony whereof I hereunto aiix my signature.

` ROBERT U. GRANT.

a conduit having a spherical head for 

